The waste hose through which the water is removed from my washing machine is inserted into a vertical pipe extending from the floor with a U shape at its end.
The problem is that there is foam coming out of the pipe where the waste hose is inserted.
Can I extend the pipe that is after (above) the U to leave more room for the foam to form and hopefully prevent it from overspilling?
Is there a height limit ?
If the hose can reach 1 meter above the washing machine, does it mean that it is safe to have the hose connected so high?
Is there a danger of causing damage to the washing machine's water pump that pushes the water outside if it has to push a water column that is too long/high ?
Best Answer
Experience tells me that at least some models of washer won't hold water unless the drain hose extends above the water level of the wash basin. I can't quite figure out what you're trying to say about extending pipes, but it should be safe to have the water drain out of the washer drain hose at its maximum height.
Eventually, the drain hose can be high enough that the water column overwhelms the pump (or hoses), but you'd have to be doing something bordering on insane to reach that. Every foot of height in a water column adds .43 psi of water pressure, so even a hose rising 15 feet above the washing machine will provide less than 7 psi of back pressure. I can't imagine a washing machine pump which doesn't handle that.